Part A What must the initial speed of a lead bullet be at a temperature of...
Part A What must the initial speed of a lead bullet be at a temperature of 23.0 ∘C so that the heat developed when it is brought to rest will be just sufficient to melt it? Assume that all the initial mechanical energy of the bullet is converted to heat and that no heat flows from the bullet to its surroundings. (Typical rifles have muzzle speeds that exceed the speed of sound in air, which is 346 m/s at 23.0 ∘C ). v = m/s
Homework Answers
given that all the mechanical energy is converted to heat
kinetic energy = heat energy
melting temperature of lead = 327.5 celsius , c = 128
hence
v = 279.19 m/s
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Part A What must the initial speed of a lead bullet be at a
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9461388 HW10 Exercise 17.47 -Enhanced-with Solution Part A What must the initial speed of a lead bullet be at a temperature of 21.0 C so that the heat developed when it is trought to rest will be just sufficient to met 1? Assume that all the inial mechanical energy of the bullet is converted to heat and that no heat fiows from the bullet to its surroundings. (Typical rithes have muzzle speeds that exceed the speed of sound in air,...
A 9.7-g lead bullet is fired into a fence post. The initial
speed of the bullet is 710 m/s, and when it comes to rest, half its
kinetic energy goes into heating the bullet.
How much does the bullet's temperature increase?
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